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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_THREADS_H#define _LINUX_THREADS_H
/* * The default limit for the nr of threads is now in * /proc/sys/kernel/threads-max. */
/* * Maximum supported processors. Setting this smaller saves quite a * bit of memory. Use nr_cpu_ids instead of this except for static bitmaps. */#ifndef CONFIG_NR_CPUS/* FIXME: This should be fixed in the arch's Kconfig */#define CONFIG_NR_CPUS 1#endif
/* Places which use this should consider cpumask_var_t. */#define NR_CPUS CONFIG_NR_CPUS
#define MIN_THREADS_LEFT_FOR_ROOT 4
/* * This controls the default maximum pid allocated to a process */#define PID_MAX_DEFAULT (IS_ENABLED(CONFIG_BASE_SMALL) ? 0x1000 : 0x8000)
/* * A maximum of 4 million PIDs should be enough for a while. * [NOTE: PID/TIDs are limited to 2^30 ~= 1 billion, see FUTEX_TID_MASK.] */#define PID_MAX_LIMIT (IS_ENABLED(CONFIG_BASE_SMALL) ? PAGE_SIZE * 8 : \ (sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
/* * Define a minimum number of pids per cpu. Heuristically based * on original pid max of 32k for 32 cpus. Also, increase the * minimum settable value for pid_max on the running system based * on similar defaults. See kernel/pid.c:pid_idr_init() for details. */#define PIDS_PER_CPU_DEFAULT 1024#define PIDS_PER_CPU_MIN 8
#endif